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Yohanes Ovaritus Jagom

Universitas Katolik Widya Mandira

Author-ID : 2837843

Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Public Health Social Sciences Transportation Other

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Pelatihan Geogebra: Pemodelan Matematika Menggunakan Kalkulus Lakapu, Meryani; Fernandez, Aloysius Joakim; Uskono, Irmina Veronika; Jagom, Yohanes Ovaritus; Dosianaeng, Wilfridus Beda Nuba
DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) Vol 6 No 1 (2022)
Publisher : Politeknik Negeri Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32486/dikemas.v6i1.265

During the COVID-19 pandemic, everyone has the free opportunity to learn various things and anywhere. Therefore, this service activity provides breadth for all mathematics students/teachers/lecturers in Indonesia to learn about Mathematical Modeling using Calculus, which is assisted by the GeoGebra application. This activity is a collaboration between the Indonesian Mathematical Association (IndoMs), Program Studi Pendidikan Matematika Sanata Dharma, Program Studi Matematika Universitas Kristen Satya Wacana dan Program Studi Pendidikan Matematika Universitas Katolik Widya Mandira. Participants in this activity amounted to 62 (students, teachers and lecturers) from 15 campuses and 5 high schools spread throughout Indonesia. The objectives of this training are for participants to be able to: (1) understand the basic concepts of modeling using calculus; (2) pose everyday problems that can be modeled with calculus; (3) able to use geogebra in completing and analyzing mathematical modeling; and (4) able to communicate the results of mathematical modeling in written and oral form in a structured manner. Based on the evaluation results, this activity can be carried out well and the expected goals can be achieved.

Pendalaman Konsep Matematika bagi Para Guru Sekolah Dasar Uskono, Irmina Veronika; Leton, Samuel Igo; Lakapu, Meryani; Djong, Kristoforus Djawa; Jagom, Yohanes Ovaritus; Dosinaneg, Wilfridus Beda Nuba
Prima Abdika: Jurnal Pengabdian Masyarakat Vol. 3 No. 4 (2023): Volume 3 Nomor 4 Tahun 2023
Publisher : Program Studi Pendidikan Guru Sekolah Dasar Universitas Flores Ende

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/abdika.v3i4.3521

Mastery of mathematical concepts and skills in solving mathematical problems are basic abilities that must be possessed by mathematics teachers. Teachers must be able to provide strategies in producing solutions related to problems that become problems among students so that they are able to participate in learning activities properly. SD St. Angela Atambua is one of the education providers that wants to realize the goals of education. But in reality there are still many obstacles faced by St. Angela Elementary School teachers regarding the right strategies in overcoming students' problems, especially in concept mastery. Therefore, the service team together with the teachers of SD St. Angela Atambua tried to solve the problems of students by conducting training and mentoring in order to build a new mindset in solving every problem related to mathematics learning. The expected goal is that teachers are able to overcome the problems faced by students. The method used in this service is training and mentoring. Some of the positive things obtained from the implementation of this service include; 1) teachers are very enthusiastic in participating in activities because they get new information. 2) the service team provided assistance according to the problems experienced by the partners. 3). teachers are able to implement the concepts that have been obtained so that they can develop ideas and creativity by utilizing existing learning media as a form of solution to the problems experienced. With this math concept planting training, it is able to answer the challenges faced by partners so that students can take part in learning more enthusiastically and enthusiastically and can increase interest, motivation to learn, especially understanding of mathematical concepts to be better.

Profil Pemahaman Konsep Matematika Siswa SMP dalam Menyelesaikan Masalah Matematika Siki, Damianus; Djong, Kristoforus; Jagom, Yohanes
Leibniz: Jurnal Matematika Vol. 1 No. 1 (2021): Leibniz: Jurnal Matematika
Publisher : Program Studi Matematika - Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas San Pedro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59632/leibniz.v1i1.55

Penelitian ini bertujuan untuk mengetahui profil pemahaman konsep matematika siswa SMP dalam menyelesaikan masalah matematika. Subyek dalam penelitian ini terdiri dari tiga orang siswa dengan kemampuan matematika tinggi, sedang, dan rendah yang ditentukan berdasarkan hasil nilai ujian tengah semester. Indikator yang digunakan dalam mengetahui pemahaman konsep yaitu penerjemah, penaksiran dan eksplorasi. Pengumpulan data berupa hasil tugas pemecahan masalah dan hasil wawancara berdasarkan indikator pemahaman konsep matematika. Analisis data mencakup reduksi data, penyajian data, dan penarikan kesimpulan. Hasil analisis memberikan kesimpulan bahwa (1) siswa dengan kemampuan matematika tinggi mampu menyelesaikan tugas pemecahan masalah dan memenuhi ketiga indikator pemahaman konsep yaitu indikator penerjemahan penafsiran ekstrapolasi (2) siswa dengan kemampuan matematika sedang memenuhi ketiga indikator pemahaman konsep yaitu indikator penerjemahan penafsiran dan ekstrapolasi (3) siswa dengan kemampuan matematika rendah hanya memenuhi dua indikator yaitu penerjemahan penafsiran.

Belajar Matematika Sambil Bermain Bersama Siswa Sekolah Dasar dan Sekolah Menengah Lakapu, Meryani; Dosinaeng, Wilfridus Beda Nuba; Uskono, Irmina Veronika; Jagom, Yohanes Ovaritus; Leton, Samuel Igo; Djong, Kristoforus Djawa
LOSARI: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 2 (2023): Desember 2023
Publisher : LOSARI DIGITAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53860/losari.v5i2.171

The purpose of this activity is to improve students' numeracy skills by using fun methods. This activity starts from situation analysis, activity design, socialization, implementation, and evaluation of activities. The result of this activity is that it can improve students' numeracy skills. Students are faster in solving the problems given. The team hopes that tutoring activities like this can be carried out sustainably in the future. Students gave a positive impression and requested that this teaching and learning activity be sustainable because it really helped them in understanding basic concepts

Analisis Pemahaman Konsep Siswa pada Materi Fungsi Komposisi Ditinjau dari Gaya Belajar VAK Tameon, Theresia Avila; Jagom, Yohanes Ovaritus; Gena, Margareta
Polinomial : Jurnal Pendidikan Matematika Vol. 4 No. 4 (2025)
Publisher : Papanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56916/jp.v4i4.2607

This study aims to analyze students' understanding of the concept of composite functions in terms of VAK (Visual, Auditory, and Kinesthetic) learning styles. The type of research used is descriptive qualitative with three subjects, namely 11th grade students of SMA Katolik Giovani Kupang, selected through purposive sampling. Data were collected using concept comprehension tests, learning style questionnaires, interviews, and documentation, then analyzed using the Miles and Huberman model through the stages of data reduction, data presentation, and conclusion drawing with triangulation of techniques and sources. The results of the study indicate that students with visual, auditory, and kinesthetic learning styles are able to restate concepts. However, subjects with visual and auditory learning styles are less careful in choosing work procedures and still make mistakes in algebraic calculations. Meanwhile, students with kinesthetic learning styles demonstrate better, more structured, and procedure-compliant conceptual understanding.

Hubungan Minat Belajar dengan Hasil Belajar Matematika Peserta Didik Kelas X Sera, Yohana Yunita Alehandra Bunge; Jagom, Yohanes Ovaritus; Orangola, Yulianus
Polinomial : Jurnal Pendidikan Matematika Vol. 4 No. 4 (2025)
Publisher : Papanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56916/jp.v4i4.2680

This study aims to determine the relationship between learning interest and mathematics learning outcomes of grade X students at Giovanni Catholic High School in Kupang. In reality, students' mathematics learning outcomes are still low due to low learning interest, which affects their learning achievement. This study uses a quantitative approach with a correlational method. The population in this study was all tenth-grade students at Giovanni Catholic High School in Kupang, who were selected using purposive sampling. The instruments used were a learning interest questionnaire with indicators of enjoyment, attention, interest, and involvement, as well as mid-semester summative scores (STS) in mathematics as learning outcome data. Data analysis was performed using the Shapiro–Wilk normality test and Spearman's rho correlation test with the help of SPSS Statistics 26. The results showed a positive and significant relationship between learning interest and students' mathematics learning outcomes. This means that the higher the students' learning interest, the higher the learning outcomes achieved. These findings are expected to serve as a basis for educators in designing more interesting and participatory learning strategies to increase interest and learning outcomes in mathematics.

Mapping the Layers of Understanding: An Analysis of Mathematical Comprehension in Literacy Questions using the Pirie-Kieren Theory Uskono, Irmina Veronika; Jagom, Yohanes Ovaritus; Djong, Kristoforus Djawa; Lakapu, Meryani; Dosinaeng, Wilridus Beda Nuba; Leton, Samuel Igo; Batarius, Patrisius; Mamulak, Natalia Magdalena Rafu; Guterres, Ilda
Jurnal Pendidikan MIPA Vol 26, No 4 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i4.pp2436-2452

The Pirie-Kieren theory provides a dynamic framework that explains how mathematical understanding develops in layers, starting from initial introduction to reflection through eight layers of understanding. The eight layers of understanding are Primitive Knowing, Image Making, Image Having, Property Noticing, Formalizing, Observing, Structuring, and Inventising. This study aims to analyze students' mathematical understanding in solving literacy problems based on Pirie-Kieren's theory. This study is a qualitative descriptive study, involving 15 tenth-grade students at SMA Negeri 2 Kupang Barat, Indonesia. The research instruments used were literacy tests and interviews. In-depth interviews were conducted with student representatives who had reached each layer of understanding. Student representatives were selected based on purposive sampling. Data analysis in this study was carried out in four stages, namely data reduction, data presentation, conclusion drawing, and triangulation. The literacy test data were analyzed based on Pirie-Kieren's eight layers of understanding. The eight layers of understanding are. The results show that 73.33% of students reached the image having a layer of understanding, 13.33% reached the formalizing layer, 6.67% reached the image-making layer, and 6.67% reached only the primitive knowing layer. No students reached the observing, structuring, or inventing layers. The dominance of students in the image, having a level of understanding, shows that most students have only reached the initial stage. These results indicate that students' mathematical understanding of literacy questions remains at a basic level and has not developed into a reflective understanding. Keywords: mathematical literacy, literacy questions, mathematical understanding, Pirie Kieren theory.

Pendalaman Materi dan Pelatihan Soal-Soal Olimpiade Bagi Guru SMP Yohanes Ovaritus Jagom; Kristoforus Djawa Djong; Meryani Lakapu; Samuel Igo Leton; Irmina Veronika Uskono; Wilfridus Beda Nuba Dosinaeng
KOMUNITA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 5 No 2 (2026): Mei
Publisher : PELITA NUSA TENGGARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60004/komunita.v5i2.543

OSN is an activity that comprehensively develops a culture of learning, creativity, and motivation to achieve. However, the lack of knowledge among teachers and students about mathematics Olympiad questions has resulted in poor performance. The purpose of this community service activity is to equip teachers with basic skills and techniques in understanding Olympiad material so that they can guide students to acquire the skills to solve Olympiad questions. The methods used were lectures, discussions, and simulations. The results obtained from this activity were very effective, as demonstrated by an increase in the average score from 32.33 on the pretest to 85.67 on the posttest, indicating significant progress in mastery of concepts and basic skills in solving Olympiad questions. In addition to improving academic abilities, the results of the evaluation through questionnaires showed that participants were satisfied with the implementation of the activity, both in terms of material and delivery methods. Participants gained new insights and strategies in solving Olympic questions, which had an impact on increasing their confidence and motivation. Similar community service activities in the future need to be designed with a stronger focus on the basic understanding stage so that the results achieved can be more optimal and evenly distributed.

Profil Pemahaman Mahasiswa dalam Menyelesaikan Soal Determinan Matriks Oyafianus Rindu; Kristoforus Djawa Dong; Yohanes Ovaritus Jagom
Jurnal Cendekia : Jurnal Pendidikan Matematika Vol 10 No 2 (2026): Jurnal Cendekia: Jurnal Pendidikan Matematika Volume 10 Nomor 2 Tahun 2026
Publisher : Mathematics Education Study Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cendekia.v10i2.4898

Penelitian ini bertujuan untuk mendeskripsikan profil pemahaman mahasiswa dalam menyelesaikan soal determinan matriks berdasarkan teori pemahaman instrumental dan relasional. Jenis penelitian ini adalah deskriptif kualitatif dengan subjek enam mahasiswa Program Studi Pendidikan Matematika Universitas Katolik Widya Mandira Kupang dari semester 3, 5, dan 7 yang dipilih menggunakan teknik purposive sampling. Instrumen penelitian meliputi tes tertulis soal uraian determinan matriks dan wawancara mendalam. Analisis data dilakukan melalui tahap reduksi, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa mayoritas subjek cenderung memiliki pemahaman instrumental. Hal ini ditunjukkan dengan kemampuan mahasiswa menerapkan metode Sarrus atau ekspansi kofaktor secara prosedural, namun gagal menjelaskan alasan logis penggunaan metode tersebut serta mengalami kesulitan signifikan saat menghadapi soal yang melibatkan variabel aljabar daripada angka numerik. Temuan ini mengindikasikan bahwa penguasaan konsep mahasiswa masih terbatas pada keterampilan algoritma rutin dan belum mencapai kedalaman pemahaman relasional yang memungkinkan penyelesaian masalah secara kreatif.

Co-Authors Agapitus Hendrikus Kaluge ALOYSIUS JOAKIM FERNANDEZ Besin, Yanuaria Fore Bria, Kornelis Bukifan, Kristina Yusria Cindy Tuy, Elisabeth Damianus Siki Didimus, Yustinus Dosianaeng, Wilfridus Beda Nuba Dosinaeng, Wilridus Beda Nuba Dosinaneg, Wilfridus Beda Nuba Feliksitas M. Muda Gawa, Maria Gracia Manoe Gena, Margareta Guteres, Ilda Guterres, Ilda Hendrikus Kaluge, Agapitus Igo Leton Irmina Veronika Uskono Jomar, Guido Stefano Kabu, Desky Ronaldy Kristoforus Djawa Djong Kristoforus Djawa Djong Kristoforus Djawa Dong Leo, Meriani Leton , Samuel Igo Lopez, Gratia I. P. Luon, Maria Adriani Pulo Mau, Elfrida Olo Meryani Lakapu Molo, Matilde Niis Nai, Yustinus Didimus Natalia Magdalena Rafu Mamulak Novel B. Molina Ola, Stefanus Orangola, Yulianus Oyafianus Rindu Patrisius Batarius Petrus Abineno Rindu, Oyafianus Samuel I. Leton Savio, Diogo Seo, Hendro Usa Juniano Sera, Yohana Yunita Alehandra Bunge Siki, Damianus Sogen, Teodora Basi Ina Tameon, Theresia Avila Tnesi, Stiven Aloysius Wilfridus Beda Nuba Dosianaeng Wilfridus Beda Nuba Dosinaeng Wonga, Anggerini Horlians Ina Yohana Rina Rowa Yohana Rina Rowa

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